use of a DNS cache in front of samba4 internal DNS

Andrew Bartlett abartlet at
Wed Feb 13 14:11:13 MST 2013

On Wed, 2013-02-13 at 19:53 +0100, Marc Muehlfeld wrote:
> Hello,

> About DNS: My Mailserver uses only the DNS from my provider. I have no 
> requirement that the mailserver has to resolve internal DNS zones (the 
> one I use for AD) here. If this is required for your site for some 
> reason: I don't know djbdns. Here I use bind for DNS. And bind I can 
> tell that a specific zone it has to forward to a different DNS (the one 
> on the ADC):
>    zone "" IN {
> 	type forward;
> 	forwarders {;;};
>    };

Thanks for posing this.  Where local conditions (eg high load, existing
infrastructure, criticality) mean that using the internal forwarding
capabilities of the internal DNS server would not be suitable, this is
exactly the right thing to do.

Andrew Bartlett

Andrew Bartlett                      
Authentication Developer, Samba Team 

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